Research Article

Comparative Safety, Immunogenicity, and Efficacy of CEF Cell-Based and DF-1 Cell Line Adapted Infectious Bursal Disease Vaccines in Specific-Pathogen-Free Chickens

Figure 3

Geometric mean antibody titer measured on prevaccination and postvaccination sera. Group-I chickens () were vaccinated with DF-1 cell-adapted IBDV vaccine, Group-II chickens () were vaccinated with CEF cell-based IBDV vaccine, while Group-III served as unvaccinated control. Serum was collected at various intervals: prevaccination, and 7, 14, and 24 days-postvaccination, and was analysed using iELISA. OD values were measured at 450 nm. One-way ANOVA values are indicated to show comparison between the 3 groups. is the sample to positive ratio.